Conserva E, Fadda M, Ferrari V, Consolo U
Department of Surgery, Medicine, Dentistry and Morphological Sciences with Interest in Transplant, Oncology and Regenerative Medicine, University of Modena and Reggio Emilia, Modena, Italy.
Private Practice, Fiesso Umbertiano, Rovigo, Bologna, Italy.
ScientificWorldJournal. 2020 Jan 25;2020:4576748. doi: 10.1155/2020/4576748. eCollection 2020.
In clinical daily practice, there are situations in which implant sites have vertical and/or horizontal bone defects and often we must improve their morphology and dimensions before fixture insertion. It is crucial to carefully evaluate the surgical site as regards the characteristics of both hard and soft tissues. The orthodontic extrusion technique can be used for nonsurgical augmentation of the implant site as an alternative to traditional regenerative/reparative surgical therapies. The orthodontic extrusion is based on a biological mechanism that uses the portion of periodontal ligament, still present on the root before the tooth extraction, for the increase of hard and soft tissues. In the literature, there is no evidence of common guidelines for this technique but only tips based on personal experience and/or previous studies. The aim of this study was to investigate and to validate the reliability of a new orthodontic extrusion technique (MF Extrusion Technique, by Dr. Mauro Fadda) by means of a retrospective consecutive case-series study. After we have done a review of the literature, we evaluated the X-rays of twelve consecutively treated patients before the orthodontic extrusion (T0) and after the stabilization period (T1), in order to quantify, by two different measurements, area and linear, the bone gain obtained by the application of the new technique. All the patients examined showed a significant increase in bone areas with an average value of 31.575 mm. The linear bone gain had an average value of 4.63 mm. Data collected were statistically analysed by the Wilcoxon signed-rank test. The results obtained both from area and linear measurements at T0 and at T1 times showed that there was a statistically significant bone gain with < 0.01.
在临床日常实践中，存在种植位点有垂直和/或水平骨缺损的情况，并且在植入种植体之前，我们常常必须改善其形态和尺寸。仔细评估手术部位的软硬组织特征至关重要。正畸牵引技术可用于种植位点的非手术性增量，作为传统再生/修复性手术治疗的替代方法。正畸牵引基于一种生物学机制，该机制利用拔牙前牙根上仍存在的牙周膜部分来增加软硬组织。在文献中，没有关于该技术的通用指南的证据，只有基于个人经验和/或先前研究的提示。本研究的目的是通过回顾性连续病例系列研究来调查和验证一种新的正畸牵引技术（毛罗·法达医生的MF牵引技术）的可靠性。在我们进行文献综述后，我们评估了12例连续接受治疗的患者在正畸牵引前（T0）和稳定期后（T1）的X线片，以便通过两种不同的测量方法，即面积测量和线性测量，来量化应用新技术所获得的骨增量。所有接受检查的患者骨面积均有显著增加，平均值为31.575平方毫米。线性骨增量的平均值为4.63毫米。收集的数据通过威尔科克森符号秩检验进行统计分析。在T0和T1时从面积和线性测量获得的结果均表明，骨增量具有统计学显著性，P<0.01。
